sin 167°cos107°-cos167°sin107°=
Matematika
yogi542
Pertanyaan
sin 167°cos107°-cos167°sin107°=
1 Jawaban
-
1. Jawaban dharmawan14
sin ( A - B) = sin A cos B - cos A sin B
sin 167 cos 107 - cos 167 sin 107
= sin ( 167 - 107)
= sin 60
= 1/2V3